2. The missing numbers from the set of coordinate pairs below are respectively {(-1, 5), (12, 18), (0, 6), (-3, 3), (4, 2), (2, 11)
a. 2 and -5
b. 24 and 66
c. 10 and 5
d. -2 and 17
e. -2 and 5

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?